PR 54861 - libstdc++ header file typo

From: Andrew MacLeod <amacleod at redhat dot com>

To: gcc-patches <gcc-patches at gcc dot gnu dot org>

Date: Tue, 09 Oct 2012 14:40:46 -0400

Subject: PR 54861 - libstdc++ header file typo

There is a typo in the header files for libstdc++ where the
atomic_signal_fence() method is actually calling __atomic_thread_fence()
instead of __atomic_signal_fence(). This results in extra barriers in
the executable that don't need to be there.

fixed as trivial and checked into mainline. Is it OK to check this into
the 4.7 branch once I've verified it there as well? ie, it's not frozen
or anything right now is it?